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Diffstat (limited to 'mesalib/src/mesa/tnl/t_vertex.c')
-rw-r--r--mesalib/src/mesa/tnl/t_vertex.c564
1 files changed, 564 insertions, 0 deletions
diff --git a/mesalib/src/mesa/tnl/t_vertex.c b/mesalib/src/mesa/tnl/t_vertex.c
new file mode 100644
index 000000000..fe4209ae5
--- /dev/null
+++ b/mesalib/src/mesa/tnl/t_vertex.c
@@ -0,0 +1,564 @@
+/*
+ * Copyright 2003 Tungsten Graphics, inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, and/or sell copies of the Software, and to permit persons to whom
+ * the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ * TUNGSTEN GRAPHICS AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ * Keith Whitwell <keithw@tungstengraphics.com>
+ */
+
+#include "main/glheader.h"
+#include "main/context.h"
+#include "main/colormac.h"
+
+#include "t_context.h"
+#include "t_vertex.h"
+
+#define DBG 0
+
+/* Build and manage clipspace/ndc/window vertices.
+ */
+
+static GLboolean match_fastpath( struct tnl_clipspace *vtx,
+ const struct tnl_clipspace_fastpath *fp)
+{
+ GLuint j;
+
+ if (vtx->attr_count != fp->attr_count)
+ return GL_FALSE;
+
+ for (j = 0; j < vtx->attr_count; j++)
+ if (vtx->attr[j].format != fp->attr[j].format ||
+ vtx->attr[j].inputsize != fp->attr[j].size ||
+ vtx->attr[j].vertoffset != fp->attr[j].offset)
+ return GL_FALSE;
+
+ if (fp->match_strides) {
+ if (vtx->vertex_size != fp->vertex_size)
+ return GL_FALSE;
+
+ for (j = 0; j < vtx->attr_count; j++)
+ if (vtx->attr[j].inputstride != fp->attr[j].stride)
+ return GL_FALSE;
+ }
+
+ return GL_TRUE;
+}
+
+static GLboolean search_fastpath_emit( struct tnl_clipspace *vtx )
+{
+ struct tnl_clipspace_fastpath *fp = vtx->fastpath;
+
+ for ( ; fp ; fp = fp->next) {
+ if (match_fastpath(vtx, fp)) {
+ vtx->emit = fp->func;
+ return GL_TRUE;
+ }
+ }
+
+ return GL_FALSE;
+}
+
+void _tnl_register_fastpath( struct tnl_clipspace *vtx,
+ GLboolean match_strides )
+{
+ struct tnl_clipspace_fastpath *fastpath = CALLOC_STRUCT(tnl_clipspace_fastpath);
+ GLuint i;
+
+ fastpath->vertex_size = vtx->vertex_size;
+ fastpath->attr_count = vtx->attr_count;
+ fastpath->match_strides = match_strides;
+ fastpath->func = vtx->emit;
+ fastpath->attr = (struct tnl_attr_type *)
+ _mesa_malloc(vtx->attr_count * sizeof(fastpath->attr[0]));
+
+ for (i = 0; i < vtx->attr_count; i++) {
+ fastpath->attr[i].format = vtx->attr[i].format;
+ fastpath->attr[i].stride = vtx->attr[i].inputstride;
+ fastpath->attr[i].size = vtx->attr[i].inputsize;
+ fastpath->attr[i].offset = vtx->attr[i].vertoffset;
+ }
+
+ fastpath->next = vtx->fastpath;
+ vtx->fastpath = fastpath;
+}
+
+
+
+/***********************************************************************
+ * Build codegen functions or return generic ones:
+ */
+static void choose_emit_func( GLcontext *ctx, GLuint count, GLubyte *dest)
+{
+ struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
+ struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+ struct tnl_clipspace_attr *a = vtx->attr;
+ const GLuint attr_count = vtx->attr_count;
+ GLuint j;
+
+ for (j = 0; j < attr_count; j++) {
+ GLvector4f *vptr = VB->AttribPtr[a[j].attrib];
+ a[j].inputstride = vptr->stride;
+ a[j].inputsize = vptr->size;
+ a[j].emit = a[j].insert[vptr->size - 1]; /* not always used */
+ }
+
+ vtx->emit = NULL;
+
+ /* Does this match an existing (hardwired, codegen or known-bad)
+ * fastpath?
+ */
+ if (search_fastpath_emit(vtx)) {
+ /* Use this result. If it is null, then it is already known
+ * that the current state will fail for codegen and there is no
+ * point trying again.
+ */
+ }
+ else if (vtx->codegen_emit) {
+ vtx->codegen_emit(ctx);
+ }
+
+ if (!vtx->emit) {
+ _tnl_generate_hardwired_emit(ctx);
+ }
+
+ /* Otherwise use the generic version:
+ */
+ if (!vtx->emit)
+ vtx->emit = _tnl_generic_emit;
+
+ vtx->emit( ctx, count, dest );
+}
+
+
+
+static void choose_interp_func( GLcontext *ctx,
+ GLfloat t,
+ GLuint edst, GLuint eout, GLuint ein,
+ GLboolean force_boundary )
+{
+ struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+
+ if (vtx->need_extras &&
+ (ctx->_TriangleCaps & (DD_TRI_LIGHT_TWOSIDE|DD_TRI_UNFILLED))) {
+ vtx->interp = _tnl_generic_interp_extras;
+ } else {
+ vtx->interp = _tnl_generic_interp;
+ }
+
+ vtx->interp( ctx, t, edst, eout, ein, force_boundary );
+}
+
+
+static void choose_copy_pv_func( GLcontext *ctx, GLuint edst, GLuint esrc )
+{
+ struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+
+ if (vtx->need_extras &&
+ (ctx->_TriangleCaps & (DD_TRI_LIGHT_TWOSIDE|DD_TRI_UNFILLED))) {
+ vtx->copy_pv = _tnl_generic_copy_pv_extras;
+ } else {
+ vtx->copy_pv = _tnl_generic_copy_pv;
+ }
+
+ vtx->copy_pv( ctx, edst, esrc );
+}
+
+
+/***********************************************************************
+ * Public entrypoints, mostly dispatch to the above:
+ */
+
+
+/* Interpolate between two vertices to produce a third:
+ */
+void _tnl_interp( GLcontext *ctx,
+ GLfloat t,
+ GLuint edst, GLuint eout, GLuint ein,
+ GLboolean force_boundary )
+{
+ struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+ vtx->interp( ctx, t, edst, eout, ein, force_boundary );
+}
+
+/* Copy colors from one vertex to another:
+ */
+void _tnl_copy_pv( GLcontext *ctx, GLuint edst, GLuint esrc )
+{
+ struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+ vtx->copy_pv( ctx, edst, esrc );
+}
+
+
+/* Extract a named attribute from a hardware vertex. Will have to
+ * reverse any viewport transformation, swizzling or other conversions
+ * which may have been applied:
+ */
+void _tnl_get_attr( GLcontext *ctx, const void *vin,
+ GLenum attr, GLfloat *dest )
+{
+ struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+ const struct tnl_clipspace_attr *a = vtx->attr;
+ const GLuint attr_count = vtx->attr_count;
+ GLuint j;
+
+ for (j = 0; j < attr_count; j++) {
+ if (a[j].attrib == attr) {
+ a[j].extract( &a[j], dest, (GLubyte *)vin + a[j].vertoffset );
+ return;
+ }
+ }
+
+ /* Else return the value from ctx->Current.
+ */
+ if (attr == _TNL_ATTRIB_POINTSIZE) {
+ /* If the hardware vertex doesn't have point size then use size from
+ * GLcontext. XXX this will be wrong if drawing attenuated points!
+ */
+ dest[0] = ctx->Point.Size;
+ }
+ else {
+ _mesa_memcpy( dest, ctx->Current.Attrib[attr], 4*sizeof(GLfloat));
+ }
+}
+
+
+/* Complementary operation to the above.
+ */
+void _tnl_set_attr( GLcontext *ctx, void *vout,
+ GLenum attr, const GLfloat *src )
+{
+ struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+ const struct tnl_clipspace_attr *a = vtx->attr;
+ const GLuint attr_count = vtx->attr_count;
+ GLuint j;
+
+ for (j = 0; j < attr_count; j++) {
+ if (a[j].attrib == attr) {
+ a[j].insert[4-1]( &a[j], (GLubyte *)vout + a[j].vertoffset, src );
+ return;
+ }
+ }
+}
+
+
+void *_tnl_get_vertex( GLcontext *ctx, GLuint nr )
+{
+ struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+
+ return vtx->vertex_buf + nr * vtx->vertex_size;
+}
+
+void _tnl_invalidate_vertex_state( GLcontext *ctx, GLuint new_state )
+{
+ if (new_state & (_DD_NEW_TRI_LIGHT_TWOSIDE|_DD_NEW_TRI_UNFILLED) ) {
+ struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+ vtx->new_inputs = ~0;
+ vtx->interp = choose_interp_func;
+ vtx->copy_pv = choose_copy_pv_func;
+ }
+}
+
+static void invalidate_funcs( struct tnl_clipspace *vtx )
+{
+ vtx->emit = choose_emit_func;
+ vtx->interp = choose_interp_func;
+ vtx->copy_pv = choose_copy_pv_func;
+ vtx->new_inputs = ~0;
+}
+
+GLuint _tnl_install_attrs( GLcontext *ctx, const struct tnl_attr_map *map,
+ GLuint nr, const GLfloat *vp,
+ GLuint unpacked_size )
+{
+ struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+ GLuint offset = 0;
+ GLuint i, j;
+
+ assert(nr < _TNL_ATTRIB_MAX);
+ assert(nr == 0 || map[0].attrib == VERT_ATTRIB_POS);
+
+ vtx->new_inputs = ~0;
+ vtx->need_viewport = GL_FALSE;
+
+ if (vp) {
+ vtx->need_viewport = GL_TRUE;
+ }
+
+ for (j = 0, i = 0; i < nr; i++) {
+ const GLuint format = map[i].format;
+ if (format == EMIT_PAD) {
+ if (DBG)
+ _mesa_printf("%d: pad %d, offset %d\n", i,
+ map[i].offset, offset);
+
+ offset += map[i].offset;
+
+ }
+ else {
+ GLuint tmpoffset;
+
+ if (unpacked_size)
+ tmpoffset = map[i].offset;
+ else
+ tmpoffset = offset;
+
+ if (vtx->attr_count != j ||
+ vtx->attr[j].attrib != map[i].attrib ||
+ vtx->attr[j].format != format ||
+ vtx->attr[j].vertoffset != tmpoffset) {
+ invalidate_funcs(vtx);
+
+ vtx->attr[j].attrib = map[i].attrib;
+ vtx->attr[j].format = format;
+ vtx->attr[j].vp = vp;
+ vtx->attr[j].insert = _tnl_format_info[format].insert;
+ vtx->attr[j].extract = _tnl_format_info[format].extract;
+ vtx->attr[j].vertattrsize = _tnl_format_info[format].attrsize;
+ vtx->attr[j].vertoffset = tmpoffset;
+ }
+
+
+ if (DBG)
+ _mesa_printf("%d: %s, vp %p, offset %d\n", i,
+ _tnl_format_info[format].name, (void *)vp,
+ vtx->attr[j].vertoffset);
+
+ offset += _tnl_format_info[format].attrsize;
+ j++;
+ }
+ }
+
+ vtx->attr_count = j;
+
+ if (unpacked_size)
+ vtx->vertex_size = unpacked_size;
+ else
+ vtx->vertex_size = offset;
+
+ assert(vtx->vertex_size <= vtx->max_vertex_size);
+ return vtx->vertex_size;
+}
+
+
+
+void _tnl_invalidate_vertices( GLcontext *ctx, GLuint newinputs )
+{
+ struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+ vtx->new_inputs |= newinputs;
+}
+
+
+/* This event has broader use beyond this file - will move elsewhere
+ * and probably invoke a driver callback.
+ */
+void _tnl_notify_pipeline_output_change( GLcontext *ctx )
+{
+ struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+ invalidate_funcs(vtx);
+}
+
+
+static void adjust_input_ptrs( GLcontext *ctx, GLint diff)
+{
+ struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
+ struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+ struct tnl_clipspace_attr *a = vtx->attr;
+ const GLuint count = vtx->attr_count;
+ int j;
+
+ diff -= 1;
+ for (j=0; j<count; ++j) {
+ register GLvector4f *vptr = VB->AttribPtr[a->attrib];
+ (a++)->inputptr += diff*vptr->stride;
+ }
+}
+
+static void update_input_ptrs( GLcontext *ctx, GLuint start )
+{
+ struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
+ struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+ struct tnl_clipspace_attr *a = vtx->attr;
+ const GLuint count = vtx->attr_count;
+ GLuint j;
+
+ for (j = 0; j < count; j++) {
+ GLvector4f *vptr = VB->AttribPtr[a[j].attrib];
+
+ if (vtx->emit != choose_emit_func) {
+ assert(a[j].inputstride == vptr->stride);
+ assert(a[j].inputsize == vptr->size);
+ }
+
+ a[j].inputptr = ((GLubyte *)vptr->data) + start * vptr->stride;
+ }
+
+ if (a->vp) {
+ vtx->vp_scale[0] = a->vp[MAT_SX];
+ vtx->vp_scale[1] = a->vp[MAT_SY];
+ vtx->vp_scale[2] = a->vp[MAT_SZ];
+ vtx->vp_scale[3] = 1.0;
+ vtx->vp_xlate[0] = a->vp[MAT_TX];
+ vtx->vp_xlate[1] = a->vp[MAT_TY];
+ vtx->vp_xlate[2] = a->vp[MAT_TZ];
+ vtx->vp_xlate[3] = 0.0;
+ }
+}
+
+
+void _tnl_build_vertices( GLcontext *ctx,
+ GLuint start,
+ GLuint end,
+ GLuint newinputs )
+{
+ struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+ update_input_ptrs( ctx, start );
+ vtx->emit( ctx, end - start,
+ (GLubyte *)(vtx->vertex_buf +
+ start * vtx->vertex_size));
+}
+
+/* Emit VB vertices start..end to dest. Note that VB vertex at
+ * postion start will be emitted to dest at position zero.
+ */
+void *_tnl_emit_vertices_to_buffer( GLcontext *ctx,
+ GLuint start,
+ GLuint end,
+ void *dest )
+{
+ struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+
+ update_input_ptrs(ctx, start);
+ /* Note: dest should not be adjusted for non-zero 'start' values:
+ */
+ vtx->emit( ctx, end - start, (GLubyte*) dest );
+ return (void *)((GLubyte *)dest + vtx->vertex_size * (end - start));
+}
+
+/* Emit indexed VB vertices start..end to dest. Note that VB vertex at
+ * postion start will be emitted to dest at position zero.
+ */
+
+void *_tnl_emit_indexed_vertices_to_buffer( GLcontext *ctx,
+ const GLuint *elts,
+ GLuint start,
+ GLuint end,
+ void *dest )
+{
+ struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+ GLuint oldIndex;
+ GLubyte *cdest = dest;
+
+ update_input_ptrs(ctx, oldIndex = elts[start++]);
+ vtx->emit( ctx, 1, cdest );
+ cdest += vtx->vertex_size;
+
+ for (; start < end; ++start) {
+ adjust_input_ptrs(ctx, elts[start] - oldIndex);
+ oldIndex = elts[start];
+ vtx->emit( ctx, 1, cdest);
+ cdest += vtx->vertex_size;
+ }
+
+ return (void *) cdest;
+}
+
+
+void _tnl_init_vertices( GLcontext *ctx,
+ GLuint vb_size,
+ GLuint max_vertex_size )
+{
+ struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+
+ _tnl_install_attrs( ctx, NULL, 0, NULL, 0 );
+
+ vtx->need_extras = GL_TRUE;
+ if (max_vertex_size > vtx->max_vertex_size) {
+ _tnl_free_vertices( ctx );
+ vtx->max_vertex_size = max_vertex_size;
+ vtx->vertex_buf = (GLubyte *)ALIGN_CALLOC(vb_size * max_vertex_size, 32 );
+ invalidate_funcs(vtx);
+ }
+
+ switch(CHAN_TYPE) {
+ case GL_UNSIGNED_BYTE:
+ vtx->chan_scale[0] = 255.0;
+ vtx->chan_scale[1] = 255.0;
+ vtx->chan_scale[2] = 255.0;
+ vtx->chan_scale[3] = 255.0;
+ break;
+ case GL_UNSIGNED_SHORT:
+ vtx->chan_scale[0] = 65535.0;
+ vtx->chan_scale[1] = 65535.0;
+ vtx->chan_scale[2] = 65535.0;
+ vtx->chan_scale[3] = 65535.0;
+ break;
+ default:
+ vtx->chan_scale[0] = 1.0;
+ vtx->chan_scale[1] = 1.0;
+ vtx->chan_scale[2] = 1.0;
+ vtx->chan_scale[3] = 1.0;
+ break;
+ }
+
+ vtx->identity[0] = 0.0;
+ vtx->identity[1] = 0.0;
+ vtx->identity[2] = 0.0;
+ vtx->identity[3] = 1.0;
+
+ vtx->codegen_emit = NULL;
+
+#ifdef USE_SSE_ASM
+ if (!_mesa_getenv("MESA_NO_CODEGEN"))
+ vtx->codegen_emit = _tnl_generate_sse_emit;
+#endif
+}
+
+
+void _tnl_free_vertices( GLcontext *ctx )
+{
+ TNLcontext *tnl = TNL_CONTEXT(ctx);
+ if (tnl) {
+ struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+ struct tnl_clipspace_fastpath *fp, *tmp;
+
+ if (vtx->vertex_buf) {
+ ALIGN_FREE(vtx->vertex_buf);
+ vtx->vertex_buf = NULL;
+ }
+
+ for (fp = vtx->fastpath ; fp ; fp = tmp) {
+ tmp = fp->next;
+ FREE(fp->attr);
+
+ /* KW: At the moment, fp->func is constrained to be allocated by
+ * _mesa_exec_alloc(), as the hardwired fastpaths in
+ * t_vertex_generic.c are handled specially. It would be nice
+ * to unify them, but this probably won't change until this
+ * module gets another overhaul.
+ */
+ _mesa_exec_free((void *) fp->func);
+ FREE(fp);
+ }
+
+ vtx->fastpath = NULL;
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-12 14:30:32 +0000